9z+6+3z=90

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Solution for 9z+6+3z=90 equation: 


Simplifying
9z + 6 + 3z = 90

Reorder the terms:
6 + 9z + 3z = 90

Combine like terms: 9z + 3z = 12z
6 + 12z = 90

Solving
6 + 12z = 90

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-6' to each side of the equation.
6 + -6 + 12z = 90 + -6

Combine like terms: 6 + -6 = 0
0 + 12z = 90 + -6
12z = 90 + -6

Combine like terms: 90 + -6 = 84
12z = 84

Divide each side by '12'.
z = 7

Simplifying
z = 7

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